[gtk/wip/otte/listview] Add missing headers to the public-headers list

[Matthias Clasen <matthiasc src gnome org>]

commit c8f27d1ac6fd3c89f00b734ca53205c3d3b881d1
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Jan 6 07:52:26 2019 -0500

    Add missing headers to the public-headers list
    
    Without this, the types don't end up in gtk_test_list_all_types,
    and then tests like the defaultvalue test don't check them.

 gtk/meson.build | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/gtk/meson.build b/gtk/meson.build
index d54c5f4426..e4f8451d9d 100644
--- a/gtk/meson.build
+++ b/gtk/meson.build
@@ -538,10 +538,12 @@ gtk_public_headers = files([
   'gtkmenushell.h',
   'gtkmenutoolbutton.h',
   'gtkmessagedialog.h',
+  'gtkmultiselection.h',
   'gtkmodelbutton.h',
   'gtkmountoperation.h',
   'gtknativedialog.h',
   'gtknotebook.h',
+  'gtknoselection.h',
   'gtkorientable.h',
   'gtkoverlay.h',
   'gtkpadcontroller.h',